Zhang Mu straightened up, looked at Haohao without saying anything, and just patted his shoulder silently. Then he turned around and said to Yuan Rui, "We have wasted too much time. Let's set off now. Let Haohao go with us to Shanxi City first, and then we will make arrangements after we come back."

"Okay, uncle, I'll listen to you. Now that the problem has been solved, let's go quickly. You still have things to do." Yuan Rui considerately let Zhang Mu put her on the carapace of the obsidian worm, and then lifted Haohao up and handed him to Yuan Rui's arms.

"Xiao Hei, stupid dog, get out of here!"

Although Zhang Mu is now running at full speed with the mutant wolfhound, which is faster than the wolfhound can run on its own, there are two people on the Obsidian Worm. Carrying two people is not a simple matter of adding up the weight. Every increase in weight will have a huge impact on the Obsidian Worm.

Moreover, Zhang Mu was holding the wolfhound. Although the power of the mental shield offset it, his arms were still numb from holding it. If he really encountered any unexpected situation, Zhang Mu's combat effectiveness would be greatly reduced due to his stiff arms.

So after thinking about it and assessing the benefits and risks, he decided to slow down and let the mutant wolfhound follow behind at its normal speed.

Zhang Mu ran in one direction first. He couldn't identify the correct direction to Shanxi City now. He could only return to the main road and then adjust the direction.

He returned to his original starting point, passed through the town, changed direction several times, and finally came to the right road. Before leaving, he looked back at the dead silent town behind him and the high black smoke from the abandoned factory, and sighed in his heart.

"Now this town is still the same as before he arrived, quiet and strangely lifeless. But who knows how much impact my arrival has had on the trajectory of mankind? But he has never heard of such mutant spiders appearing in large numbers in later generations." He didn't know if the butterfly effect after his rebirth had any impact here. He guessed that either this disaster mother was destroyed for some special reason before it could successfully give birth,

Let these mutant spiders die in the womb. Or another possibility is that these tens of thousands of mutant spiders were born and suffered an irresistible destructive blow before they grew up.

Zhang Mu didn't know what the reason was. Anyway, the matter has been resolved now. After Zhang Mu determined the direction of Shanxi City, he spread his hands, found a relatively flat road, and ran all the way. The obsidian worm and the mutant wolfhound followed closely behind. He deliberately maintained the normal speed of the mutant wolfhound, in case it was exhausted when he needed its abilities, which would be a waste of time.

After several days and nights of running around, the only threat that could pose a threat to Zhang Mu was a group of first-order zombies numbering as many as five digits. However, Zhang Mu was just a little envious. For him now, more than ten thousand first-order crystals were not very powerful, and the risk and benefit were not proportional. Once the number exceeded five digits, the destructive power that the zombie group could cause would not be as simple as an increase in number.

Even if a zombie group consists of 9,999 zombies, it is still different from 10,000 zombies.

That would really be a case of a slight error leading to a huge difference.

Because of the competition within the species and the increase in density, a critical point has been reached, so nature will slowly select and produce an intelligent zombie from these ten thousand first-level zombies to command and control the entire zombie group.

Although this process would take a long time, because the zombies developing intelligence is itself extremely unfair to humans, and it is impossible for this era to destroy the balance like this, but the group of 10,000 zombies in front of Zhang Mu seemed to have been formed for some time.

Even though Zhang Mu was certain that it would be impossible for an intelligent zombie to appear in the future within two months after the opening of the Bliss Era that could fully control the entire zombie horde, he did not dare to take the risk. Just for a mere 10,000 first-level crystals, he would test how much control the intelligent zombie that was slowly developing could control.

The obsidian worm went over and stirred up the zombie group, picked up a zombie on the outermost edge and ran back, flying beside and chewing it, remaining indifferent even though Yuan Rui despised it.

It said that it just missed the taste of zombie heads. However, the zombie group just froze for a while and did not chase after it. Zhang Mu was even more certain that there must be an evolving intelligent zombie among the five-digit zombie group. Otherwise, these zombie groups would have been provoked by the obsidian worms, and would not be in the current situation where they were suppressing their instincts.

So when the obsidian worm ran out on its own initiative, Zhang Mu's heart couldn't help but tremble. What if this intelligent zombie became interested in him and others, and made this huge group of zombies start moving in advance? That would be interesting. It wouldn't be a matter of him having to take a detour, and the changes would be huge.

Fortunately, it didn't follow. But from another perspective, this was also extremely terrifying. Either it felt that Zhang Mu and his people were really not worthy of its attention, or it was already at a critical step in its own evolution. In the latter case, the situation would be much more serious. In other words, in a few months, the surrounding cities would be occupied by a zombie swarm of at least 10,000 people, and humans would be forced to shrink into a small city. Then, in this case, ordinary people and evolvers with low strength would be driven out of the city and left to fend for themselves.

However, this is unavoidable, because Zhang Mu currently has no ability to solve this problem. This is different from exterminating the group of mutant spiders in that small town a few days ago.

That time, it was also a coincidence of the times, with the right time, right place and right people. The right time was that this group of little spiders had not grown up yet, and the right place was the big pit and the giant cocoon that enveloped these mutated little spiders.

Of course, the most important people are these mutated little spiders who refuse to leave the place where they were born and are extremely afraid of fire energy.

The opponent in front of Zhang Mu now is not a heavyweight opponent at all.

A group of zombies with a commander has a discipline and fearlessness of death far exceeding that of a human team.

Zhang Mu could only pray that during the few months it took for this intelligent zombie to complete its evolution, he could evolve to the point where he could control the entire situation.

(End of this chapter)